Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7ea1f21e28bc922ded8bb2afbe347f30d9556688a628c907ccba6173592e693b' 
  AND token = 'AgpBM2tb2mBM7InGk0XrJaeKM85yG0otHmRBvQT5Gkw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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