Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2da1e9b11750e9c2c80be046e76279ecccfce20e7edf32b9207d8b32e3f3d19c' 
  AND token = 'nZM7pR5FAdyrgeakp3oFSaRG/c+GjecGEPH6ybNiFPY=' 
  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"
    }
  }
}