Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aceeff02646ab06e63fea5d5b8bd5b9a795607a3447bac2888aa0fb2d8800b29' 
  AND token = 'tE2A/bETIOAmoweVnWYmJcRlQRbVCrB0G9JNpeeRaMQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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