Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f598a327cb731b0f52d060e1de1961f2c1008afd43d54c53a48f00f548e5e803' 
  AND token = '2y+I8z7uzGJoIqatfQ05Uw2gNSUxKxJDW17toKX5sPs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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