Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ae1c469fa60bb7faa7e34c46819dd33dc43d05b015c7ad4bb94f58c0f817fff9' 
  AND token = '8rYA+njRX0wORkODZXd4dJWOdtM85G3CnyeEAuOJUFA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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