Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0297b3624e61339cc5efc2fa1bb5b8dc5f68f4e745bcd04859fdbd98d7db3828' 
  AND token = 'RV7Q+rNKgGPjp97sUrplTybXlI+dT0wkoP/x+aP7Q70=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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