Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = '0cd9b740d7dad4e08370d83df41fa622ee590c0ab192595768f20096a20bd7e8' 
  AND token = 'PMd1DdflanK62ECp+0DW1AM4wlXmUmro8512n7Kx2AQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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