Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8e02374229c169d2226cd6f9003506bffa95e57f543633f6da7eb36d2e07bfb0' 
  AND token = 'UTO+eKVWz4TjZS/QmVy2Lw2iycUnMgOw0cbwntexVCE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00048

JSON explain

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