Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ed3589a6f09df1d6d5850620894b65020c2d21a1c2de6379d880c6c82c2f52c2' 
  AND token = '8FPTQZ2duKwuzEMLhmREsYALKGdV2hiidgGiwVYqEV8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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