Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'baa4988c6691d67071a2951cdafeefacfbc030c77577a56a3e1f632bd4b329d6' 
  AND token = 'c/5t6GTGvFSxVSFkB98aXrKDDYuS2YyxFp/7w3x/Zjk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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