Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '140b39c81ceb070fc2a15e1ae6a20b4f5ad5112509e7d4e4afd33406255b061e' 
  AND token = 'O8mGOWR/e7xakRV6gf4X9xWTAhIIURnjibkPgDd9R7o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}