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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '13eeb118e5af737e05954636941d7be0f7fe7b8cd91fe9ddd22d1c925787bfe3' 
  AND token = 'bVhE1zGAON8AsXZhcLgd8D6E/TUAZFa53feK08II6rc=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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