Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '729155afed88826498627e18f47a5c86159ba2f6eab41ac53e54f96bb3e58c8c' 
  AND token = 'BPkj3oH2lvKUimOHGEOLYGNFHDpkOWkRpEHAqbYTA0s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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