Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'bb48d53cb764a236b263a438af9fd66e98fd9183fdfa59aa7d8152f254fa3693' 
  AND token = 'q8mlOCuda81X/pjXc7RpkVghe5p78OjToAIDe7NuBAA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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