Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '906e971c047962b36016a498fdeee4402e9962347c1b69214167ab6ffb8fe489' 
  AND token = 'eoVn0BjYIAsb3Qi5A4vOA4wtgVrs9VIuQFNGiS1KNkI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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