Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '0d9ebd3d50cdbb9937065716d7d27c9a44989de79ddcdf2a2095996a75e81478' 
  AND token = 'CwWLktZdeT8piyte4Btz9LyQLw6v+62kYYwOOzQRKWw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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