SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '1467f0c625fc59bbaf39657a452599677221677d63ab04ca06cf027f823a3123' 
  AND token = 'Y9wijZhtiRre6HQtwafBzwN/NaAXnZwYlqIpuI4VEkQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00025

JSON explain

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