Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b9d4412ce9867ea6c4d4afc7d1871ae6070d9c5cc74812966ca4613fcac92280' 
  AND token = 'gchnqgcq2ezJc30J96h2R/DNS9XmrQL78FPWSlnAJhY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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