Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b7662498a2b293c09b4bd79c6ca28db25c62ab8e6abe846047c9ef56149f3487' 
  AND token = '8V7djEMPZEpadfpXf8Ps+6P5gi6xNwpAq7KbnYlZPpM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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