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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1bde0f823d36c0c1ed658ed67a43cdbad2ec97df6e4951ed015ce53b4c79efc3' 
  AND token = 'hG1dpE98Q+hnl6Rk3fI2u4v7tOi82ST3SEL86gz+iSQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00051

JSON explain

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