Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '901a44e7a011da3d7ad3874fb2c209cd6f1139fa5df02aa1e7f99556316797c7' 
  AND token = 'IGCG4xZ60KJCSIm2INNWDaGQ7HAgxrfmMpXQHescGYE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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