Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd4596c3ac70802614d88a4888a2cf0b431aa701619d1fa6e0faffa81a73a4d09' 
  AND token = '36zXrW3V88Sk/Z3MbppEOCKV/ROX0loQWGbdDcpgKcc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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