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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd93e31aaae99560a1ca379d189f188c92d12ffb8634d47bfbf0cea9e8b8eca2f' 
  AND token = 'IP5pqoQgbBfc8DRjgNQUU+WMoVG5Ue5b9gjoB5H1wBw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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