Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd4307a41ff2a1ffa96ff16cb5da3dbf00ab5cb50086b684d219d532eb6986781' 
  AND token = 'ktUNRHDqb/1f8dVBMtomEERj8AbZkxfArIimwWXygUU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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