Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ba012eb932809e0111b1a37f9a5653a58c0dbe0a364eae4c957240c2d461f961' 
  AND token = '7+HbWpZ5LI2iYHGR13pdAUV71FNzArXoq2hjzr7uIqA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00026

JSON explain

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