Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'dfa47f16b0d0a6b61db193e88e89adae5c9598abc31eeb7dfbff1c23f03c142f' 
  AND token = 'BTDYmsaAK8ZKTX3gtudgDavmAX/iHg7GBfirKFvUf4c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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