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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4610c8d2215966d9457cf8a3a443c08a11287e76d9e99ae8830d6ee32094213a' 
  AND token = 'o1wN7j22B0eqdaMLgCbiMbi3Jv80wYFAEP/E1PUedIE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00045

JSON explain

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