Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'f78b525a67e851b3be5750492e3c66e2a754eff984e7b66af63cb65f6398ecea' 
  AND token = '6eRofrFBm7B/OO8oe5I1+eREU92GQrOTwwyf7s6JZq8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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