Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'eb42b7405d46525d0b26d138886364af1ae3c638a1e432bc860b54b0a5e68df9' 
  AND token = 'y6q47Smrjsd1+3FaEjo8b83GANAib0Bgd5HbcTrQpJs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00022

JSON explain

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