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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '037450156d9430d4b44ac73cbae240fa8ecf3c1115a0d0795c95721f21fe5ae1' 
  AND token = 'Oj9ape4mvT38YGf5CqL7wR0ECSn5iIGmcLE3RV25RZE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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