Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'cc0aa682d60dd8911dad44b646c10578b587375e7ffc490e631a4c53c28021de' 
  AND token = 'zH5ucCkXbW8xenZLb4DeHIaHZwm1C4xR8wSR+4eFvp0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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