Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53ae930e38b1e12072f2067d0577de142312046aa2bef11a31ae977436fc20d5' 
  AND token = 'NFH2RibVucu1oZfkMpe9MhO0lUEQZfKhw8ee0Trz1Vw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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