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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '4a2f2059da6ab2d13ab0e832ab1b6badfa0bcdf903e03898e77cac3edf2d800e' 
  AND token = 'WldBS9DvfdJuie0TIB7q/IC2mS/WitwBuNlpiNKl8/c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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