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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f06485d33ddf9f00f6e09d6ab4e39462357672697fce8505a46465e589bb99e7' 
  AND token = '7n/Hz05HvWqRqIWbMKfVzwe8DZHvcjEaN/06yTO7pWE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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