Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '93afe695211750d4c5b2a6048ae8c62b99dd13abcda4d115baa89c6f4c647731' 
  AND token = 'aNSuzEFj0dRO28mLdcM0914JfdLDHJlNrhE26NTDZ5w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}