Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd9179c409dcd9ca8e5b0e2cf212e0a96c6844cfd94d851c067782fa2001b6ff2' 
  AND token = '+ntIEQIclnOeOC06HNW/D1iI+2MDEATD9L9jUXDmmKQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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