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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a3c098a5e6c65ca37bfe9f351e71a1d789ca12e13e1be7979a0c9ea24661156' 
  AND token = 'q18Q+kI8y771qSPAPvLkk0odVjpN5iz7zb6oft/qJEs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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