Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '749b75cac909314ff5b6842a2756c3587020fc8c55f5b5f5c5c1e6c53a2ec765' 
  AND token = '9/Cmoc+X6BZz6PpLCE8Q/gNdpCM8eZcVl9iztlU5H0Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}