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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0dd17d3c0d2825ed3a24eb490e2d94fc04a9f1867b3ca479b95c6f5a8f850eaa' 
  AND token = 'fra2PbAA1TXX76psdFpPkL8pu+cnZKRLMjPICcCTGcw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}