Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '771289b50a839275e11152eb1e3873889c06b1f58c30746869a45ce6520b8109' 
  AND token = 'm+P9d9dL1Xmo8BVgXcKd6Kn45y/fplKUp24CLOszDHg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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