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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '89a3e93640a8495dc1d6f5d56fbf585e8c9bcef17c16bf5e00ef6f898150132e' 
  AND token = 'bXsdhCTPaxrzAjJVfkYHSrt1GfT9umdh0Oji9sMMYuE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00040

JSON explain

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