Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '70cefc097ad622b5a74d5bf4e19a61185e2cd4b23f0e816547935159802b823f' 
  AND token = 'Pd7aoyMugF0Rq6NJoHazRCcabgw2cBFiUiisxLdDyfo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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