Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0b86b538b26a671ae24c87b1a38a2f10261f88ade5b5e2f20a3ec3249c5f2a61' 
  AND token = 'rsptkS4s+CKLCxh42ImFy7wQbG2YMsElhKfvSTKi8b8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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