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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '05bf64d572bbebb6dc029338e7be6888e5dd572e329366d8ff0366c7c8197276' 
  AND token = 'fqUIh/N9tPTuuOPHcfK3EBeNT8Ar9veLmDnmu8DHI6U=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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