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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'eed62d657be93076acca082b90177a4aa5da599d653c611d30cd1a4893dbe6c6' 
  AND token = 'Bd74Ye7epO8jlimcjeMBsHnkWf6QyDl7l1S1jq3Gva0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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