Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1eeaa3a66444e53276998a981118968b1ca155237967e8509235880d6264aad8' 
  AND token = 'ipOUKBsNOgUIpioDOd02PMlNnwQ7M+NO6NI0gB4H0do=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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