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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7d724352465a0c02c8e99aed691570dd8c1d93f5355e3141c4b2d65753fb061c' 
  AND token = 'HZutmA4b9AXa9WadWXDel72pN6bDl5yaF0LMDIuYmH8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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