Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7b4425ce3ddf8e5fd0530bc44198b87a1151130183371ad71ba9d9f129abe620' 
  AND token = 'UEohg2V3Jv2Fo+RhHiCD1tC8nvckd3MPdf/T2kKn23c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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