SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'b2401e10cc493d58fb898705758159d256d3dcba909952ef95a13fc681d291f7' 
  AND token = '/f5fUsAS7b4XGs+r/FYmKkxIQiokDGcSfGUVeJhPLcY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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