Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0e0e82db2375ea620028f5973c2701aeb23b17f8d4d7ff9591682456e381a52d' 
  AND token = '1/JEWTulHnzo3nmgV4ls0te/5K13UPMjzS7yX3nU6Qk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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