Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8bde3899011ccc459bae1af51d5227f6cf3220e817281c2c919a002e39d3b191' 
  AND token = '0/7bea6djkua+KfVyPaO5UnOOMugGa2ysI3NiagQlsY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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