Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e7f6af113c2120feefa91329c18b0626f3f4b55f7969f6276fb86465048d8af1' 
  AND token = '2r4CzoI2kPrPD8c54LRc5qWyWGJyqtAZ+1K5rc0Nm58=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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