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SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'bec4a7e55673dc9ecbf955c1f1cf0cd1e6655686b23af16dbda49847fa2af59f' 
  AND token = 'IoY9gege80FNa8IxANIRAO6hn7BiosFYPcR0oZpmE4A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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