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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '532398f586d0a663963e41b07f9794d8aef25ed2473e70526bad8ee6ca17c4c0' 
  AND token = '46C7ruk2QUdtJzztaMC5ty/KP8TcaxLy9xRXxxVmSY4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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