SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1a5b073944d2e85a51c73ed910cedd20a791bf30176b00aa3426faa6bf2dfc1d' 
  AND token = 'SPYTHT5l+tJ743/sP74mtJjhkkkwYBGVzZsWNPqjLPM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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