Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '36e3522e02cc6815e3936acf2cc60a4d55c9ba8cb876d3517531598af8847d4e' 
  AND token = 'nCqPB/ljZ+E7HaEL7kyJ0Rb7/GbWEwSi2d2uDRdPIBs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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