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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'cd3edb2d92ac585f61e89a581b2ea7a8706382b1416db1796d4dca3b610da115' 
  AND token = 'G7ydk35kBNb602EqKDXCBQ3z9i3G9rSDLNev25jbJl8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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