Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '8c14fbecf4ecd8b30e42b156f9c243c74acc8165631e5a12a04cea18b2c07b36' 
  AND token = 'IPVAdihTT8yLgdAMDyJGrcVczvmx4pgm9Q07m/D9wZw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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