Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c1874e6c3aa8f32bdee98180f0cf79445c88a2d4acef68dd80195df0c669d92d' 
  AND token = 'jvdvx7AuLfebHLcHxTfbTHnhp63GCCNLT+U93YgkZJI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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