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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '24ff62359635a998e85166f9f979c2dd49b44601cec5f23e200af2b32136feee' 
  AND token = 'bEOg0HbzTqHnQ+/+8frbNzlgHkWshwyAU5Wo6L+Bvzs=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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