Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '010d0adb93d4ca08c79179ca1f7fb64037f0ecd64007e5d7db66b461339712e6' 
  AND token = '4Eb9sZWnkGNxbya9+s+3IpTlGF7TSVRabO+EyLKNm5M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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