Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '687cddc012cca1d92236ba95640ab28298ea7d01071c64116a17c234396974f2' 
  AND token = 'yobEDKMH41BcJC1K4e0WZru/YHU8heY9268ytVRAxAo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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