Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'be32f7f1340aec12f1365a6b4601382c669947ecc66670bc79fb810ebcd055a4' 
  AND token = 'Mco08G2pRumwM+Y3MiapiFYPPfg1w+OXSTU7mcLSUvE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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