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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '47d7f35b0b80d27e8ad6e7366e23e9eae6692d2c42b956a847c7ab00d21126d4' 
  AND token = 'dtZ7TGZBm2lGcvOjAySohlgMyXVe37uf89zvcYmDVTU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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