Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '10479522ba8bad6d7aa838dec5155b180513b2e1bcad25d9e453c5732807ea1d' 
  AND token = 'xRyMsJwlxHDOoewsOD0IhvMpLJcnaFbC1PGXckpkf08=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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